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John wants to draw a circle graph showing his friends’ favorite ice cream flavors. When he polled his friends asking each their favorite flavor of ice cream, 35% of his friends said chocolate, 20% of his friends said vanilla, 15% of his friends said strawberry, 25% of his friends said mint chocolate chip, and 5% of his friends said flavors other than those previously listed. What will be the degree measure of the vanilla sector of the circle graph?
The correct answer is D.
You are given that 20% of John’s friends selected vanilla ice cream as their favorite flavor. This means that 20% of the 360◦ in the circle will represent vanilla; 20% of 360 is equivalent to (0.20)(360◦ ), or 72◦ . If you chose one of the other answers, you may have found the degree measure of any of the other flavors.